Vertical direction tooth gap width has a cone tooth profile to is constant bevel gear or hypoid gear

摘要

The present invention can simply and / or effectively produced, the durability can provide high bevel gear and a hypoid gear as much as possible. A bevel gear (10) or hypoid gears (10) is provided with a plurality of Spiral teeth having at least one tooth gap (11). Tooth gap (11) is defined by a tooth surface (12.1, 12.2). Tooth surface (12.1, 12.2) has a toothed surface vertical line in the shape of each outer cycloid. Tooth gap (11), has a constant tooth gap bottom width (e _fn ).FIELD 1